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May 24, 1949. ST. CLAIR BROMFIELD 2,470,834

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ST. CLAIR BROMFIELD H DISTRIBUTICN BOARD 8 Sheets-Sheet 8 Fi5l ed A il10, 1 943 IINVENTOR. d'm/kflroufieza ATTORNEYS Patented May 24, 1949UNITED STATES PATENT QFFICE DISTRIBUTION BOARD St. Clair Bromfield,Jackson Heights, Long Island, N. Y.

Application April 10, 1943, Serial No. 482,655

12 Claims. I

This invention relates to card index systems and. more particularly to acontainer for cards and sheets in which the cards or sheets may bearranged in overlapping arrangement whereby identification and selectionof a sheet is readily made and entries on such sheet may be made withfacility. More particularly, the invention relates to so-called'peg-boards, although not so limited.

Herein, the cards, sheets or other element on which entries of pertinentdata may be inscribed are generically referred to as sheets.

One object of the invention is th disposition of a plurality of sheetsin minimum space such that aporti'on of each sheet i visible tofacilitate location of the sheet desired. Accordingly, the sheets arearranged in progressively overlapping arrangement.

Another object of the. invention is a disposition of sheets such thatthe sheets partially covering that. sheet which it i desired to examine,may be readily separated therefrom and displaced to permit entries onthe sheet thus located or selected. To this end, the free extremity of asheet overlappin the selected sheet may be readily raised to expose theselected sheet by placing the thumb or forefinger under a corner of thesheet above that desired, thereby enabling the desired. sheet beneath tobe exposed for the entry of information thereon or forexamination.

A further object of the invention is a device of the character describedprovidin an increased capacity for entries compared to that heretoforeobtained with the so-called peg-boards of the prior art. tion intoefiect, sheets are so constructed and arranged a to make provision for arelatively large number of entries and the sheets are superimposed instacks or banks which are so disposed on a supporting surface as toprovide for a total number of entries on sheets carried on a boardreadily attended to' by a single operator.

It is also an object of the invention to so hold and position sets ofsuperimposed sheets on a working surface to provide the advantageshereinhef'ore enumerated. In carrying this aspect of the invention intoeffect, a plurality of stacks orbanks of sheets may be positionedlaterally of one another at closely spaced intervals across a board insuch position as to be readily manipulisted for entries thereon.

Still another object of the invention i a pegboard whereon the sheetsmay be shingled longitudfna'll'y and transversely of the board.

Yet another object of the invention is sheets In carrying this aspect ofthe invenof minimum size for disposition inv the aforesaid manner havinthe maximum number of subdivisions for the reception of entries.

The invention also seeks to provide a structure employing sheets onwhich entries may be made, such that, after all entries for apredetermined period are completed, such entries appear at a free end ofthe sheet. Such entries may be brought together by causing all of thesheets. to align themselves and then all such entries may besimultaneously cut off and the remaining portions of the sheets restoredto their original shingled relation for replacement on the board; Forthis purpose, a container may be provided in. which the stack of sheetsare placed and which. on tilting, wiil cause the used parts of thesheets to align themselves for subsequent severance Then, upon tiltingthe container in the opposite direction, the sheets return to theiroriginal relative position. Desirably at this time, new sheets may beadded to the bottom of the set andthe unusable portions of the uppermostsheets may be discarded, thus effecting minimum. Waste.

In peg-boards heretofore known, the. entire upper or lower or side edgeof the sheets have: been exposed in order to afford the necessaryvisibility. A still further object of the invention is a pegboard of thecharacter described upon which stacks of sheets capable of receiving agreatly increased number of entries can be used while still furtherretaining the advantage: of: visibility. To this end, the stacks are sodisposed and the several sheets in each stack are so staggered that onlya small fraction, say anarea adjacent one corner, is visible foridentification.

Again, an object of the invention is a peg-' board on which sheets,relatively wider than those heretofore capable of being used, and" allof constant width, afiord edge visibility.

Another object of the invention is to permit a summary of the amounts orquantities posted on the respective sheets when such sheets are invarying positions in a stack on the board.

It is also an object of the invention to provide a peg-board or postingboard on which a greater number of sheets and a greater number of itemscan be posted to Visible identified units on one sheet, incontradistinction to the prior art where single strips of paper havebeen contemplated which overlap other strips of paper so as to exposethe corresponding line on other overlapping strips.

It is also an object of the invention to post bility, the detail and thesummary being all combined on a single sheet.

It is also an object of the invention to provide retaining means for thesheets, when arranged in stacks, which will permit sheets to be insertedin a direction from the operator toward the fastening means. In carryingthis aspect of the invention into eifect, positioning means are providedfor the sheets and locking pins are so disposed that, preferably, onepin holds an entire stack of sheets in perfect alignment even though therespective sheets of a stack overlap adjacent sheets in a stack.

Yet another object of the invention is the manipulation of the fasteningdevices either individually -or simultaneously.

It is also an object of the invention to secure a visibility ofpredetermined widths of, or portions of, each of a given number ofunits, say, three units. To this end, the uppermost unit is of apredetermined length, the second is of a greater length and a third unitor lowermost is of a still greater length so that all three bottom edgeportions are visible.

Another object of the invention is the provision of fastening devices ona peg-board for sheets of the character described which permits thesheet or sheets covering a lower sheet to be bent back over the remoteedge of the board to be out of the way and thus display the cardunderneath.

These and other objects of the invention and the means for theirattainment will be more apparent from the following detailed descriptiontaken in connection with the accompanying drawings illustrating oneembodiment by which the invention may be realized and in which:

Figure 1 is a view, in plan, showing the surface of the peg-board ofthis invention on which the strips of this invention are disposed;

Figure 2 is a view in side elevation, looking from th left in Figure 1;

Figure 3 is a fragmentary detail View of the positioning and fasteningmeans for the strips of this invention;

Figure 3a is a fragmentary sectional view of the structure shown inFigure 3 having a modified cam;

Figure 4 is a view showing an aligning container whereby the respectivesheets in a stack may be arranged so that used portions may besimultaneouslly cut off and, after additional sheets are added to thestack, all the sheets may be expeditiously moved to proper registeringposition for reinsertion in the apparatus;

Figure 5 is a transverse sectional view of the aligning device taken inthe plane indicated by the line 55 of Figure 4;

Figure 6 is a fragmentary View showing how missing sheets may be readilynoted in a particular stack;

Figure 7 is a view, in plan, showing devices to sever the used portionsof sheets;

Figure 8 is a View, in side elevation, of the device of Figure 7,looking from below in that figure on the line 88;

Figure 9 is a view, in perspective, showing a modified form of thepeg-board of this invention;

Figure 10 is a plan view of the modification of Figure 9, parts beingremoved to show details of construction;

Figure 11 is a transverse, sectional view which may be considered astaken in the plane indicated by the line I |l I in Figure 10, looking inthe direction of the arrows, but showing the cover closed and details ofthe mounting of the cover;

Figure 12 is a fragmentary view showing details of the positioning andfastening means of the modified construction;

Figure 13 shows the fastening means in inoperative position;

Figure 14 is a transverse vertical view taken in the plane indicated bythe line MM of Figure 12 looking in the direction of the arrows; and

Figure 15 is a transverse vertical sectional view taken in the planeindicated by the line i5l 5 in Figure 11.

Referring first to Figures 1, 2 and 3, there is disclosed what may bedescribed as a self-contained card indexing device comprising a flatsurface I5, herein called a writing surface, which is preferablyinclined to afford maximum visibility to a person sitting or standingbefore the device, but which is at preferably a sufficiently acute angleto the horizontal for convenience in inscribing information on therespective strips, sheets or cards It carried thereupon. This inclinedboard l5 forms the upper surface or top member of a cabinet shown, forpurposes of illustration as having the side walls [1, the front wall l9and a rear wall 2! which extends upwardly above the inclined board [5,as at 23, to serve as a support for the hinge 24 of a sectional coverindicated generally at 25 and 2B. The cover may be closed down tosurround and enclose the sheets which are indicated as a whole at 29.The cover, in closed position, is indicated in broken lines in Figure 2.The sections are hinged together, as at 3!, whereby the section 26 maybe folded back as illustrated in Figure 2 so that the free edge ofsection 26 will rest or engage a bracket 33 extending, if desired, fromthe rear Wall 2| to hold the cover out of the way when not in use.Obviously, other means of supporting the cover in open position may beavailed of whereby the edge of the cover is not required to rest on thedesk.

Along the rear edge portion of the writing surface, say, along therearwardly disposed or back wall portion 23 extending above the writingsurface, is placed a plurality of positioning members 35, preferablyequally spaced along the inner side of this wall and convenientlyextending from the board 15 upwardly to a height greater than that whichis sufiicient to accommodate a pile or stack of superimposed sheets l6of the number which can conveniently be used on the particular board.

Extending forwardly of the rear wall 2|, conveniently beyond thepositioning members, is a ledge 3! formed, as shown in Figure 3, with aplurality of equally spaced vertically disposed apertures 39 in whichare disposed lockin pins or plungers 4| of length sufficient to extendthrough the apertures 39 and enter cylindrical recesses 43 in the board15. These pins are materially longer than the maximum thickness of astack of sheets to permit freedom of movement of a group of uppermostsheets whereby an operator can turn back a group of uppermost sheets outof the way when entries are to be made on the exposed sheet.

The individual sheets or strips l6, as viewed for instance in Figure 1,are formed along their upper edges 45 with a plurality of recesses orslots 46. Each slot 46 is so proportioned and shaped as to receive oneof the positioning members 35. The

number to the number of slots in all of the bank.

of sheets 29 extending along the width of the board. Intermediate the:slots 46, and in a position to register with the pins M, the sheets orstrips iii are formed with a row of apertures; 41, preferably circular,to receive the pins 4| aforesaid. and be retained. thereby againstdisplacement, There-is at least: one: pin or plunger for each sheet. Apile or stack of sheets or strips, with their side edges 52! and slottedend edges 45' in register; may be held in position by means of the pins44 and positioning members 35.

To place the sheets in the desired fixed position. on. the board, thepins. M are raised a distance sufficient to permit the stack of stripsto be placed thereunder with the notches 46 engaging the positioning.members 35 and with the the cam: surfaces '51, the flat bot-tom portions59,

the vertical guiding edges GI and the fiat tops 62 ii present. The lowerportion 59 and. the slope 5! of each cam is formed with a slot 63 toreceive a pin M, the slots being so disposed as to register with boththe corresponding apertures in the ledge and in the board so that thepins may reciprocate therein. The pins 4-! conveniently have camfollower heads 55 with which the cams engage and by which the plungersmay also be individually raised by hand. Obviously the heads may beretained on the biased edges of the cams by friction or extremities ofthe saw-tooth shaped structure which may be made flat, as at 62, onwhich the heads may be supported as shown in Figure 3a.. Actuating meansfor the cam device are illustrated schematically at 58.-

Referring to Figure 9-, the peg-board there dis-- closed has a writingsurface for the reception of the sheets It, (omitted from this view asunnecessary),. the side walls H, the front wall I9 and the rear wallwhich extends upwardly abovethe writing surface l5, as at 23, and servesas a support for the hinge construction 24- of the sectional coverindicated generally at 25' and 26 so that the cover may be folded backas shown in Figure 9 or swung downwardly over the writing surface l5= asshown in Figure 11 to restupon theside wall portion I'i. It will benoted that the inner endof the cover is formed in cylindrical shape toform one element of a hinge device and the rear wall portion 23 isformed to cooperate as by a shoulder forming a bracket 33 functioning asdoes the bracket of the previously described modification to hold thecover out of the way when folded back.

Along the rearwardly disposed or back wall portion 23- is disposed aplurality of positioning members 35-, Figure 11, preferably equallyspaced along the inner side of this wall and conveniently extending fromthe writing surface it upwardly to a height greater than that which issunicient to accommodate or pile a.- stack of superimposed sheets is ofa number which can be conveniently used on a particular board. A. ledge37 is disposed above the positioning members 35 and extending forwardlythereof. The ledge is formed with a row of apertures, 39; equally spacedand preferably intermediate the positioning members 35. Inserted in. theledge to surround the apertures are friction washers 40 and slidable inthe apertures 3.9 are locking pins: 41. The friction means 40 retain thelocking pins: lil in any position: to which they are moved. In front ofthe position.- ing members 35 and at equally spaced intervals;preferably intermediate the positioning. members and in register withthe apertures 39?, the writing surface is formed with a plurality ofapertures A3 equally spaced. from one another and. at specingscorresponding to those of the: apertures 39 in which. are disposedplungers 42'... These plungers are seated in a cam fol-lower: which isadapted to reciprocate vertically to raise the plungersi 42 mountedthereon from the position indicated in Figure 13 to the positionindicated in Figure 12. Normally, the pins ill occupy the position shownin Figure 11, but when the plungers are elevated, the locking pins areraised, as shown in Figure: 12 where they are retained by the frictionof the friction devices 4!] and when the plunger-s are lowered totheposition shown in Figure 13, the: locking pins remain in the positionshown inFigure 13 which is the position at which the sheets are releasedfor removal and replacement.

Immediately in front of the cam follower 55 is a cam block 5'5 formedwitha; plurality of camslots 51 forming cam surfaces, the low spot ofthe cam. surface being to the left, as viewed in Figures l4 and 15, andthe high spot being to the right as viewed in these figures. Pins 93mountedv on the: cam follower 55 project into the cam slot 5! whereby,as will be understood, when the cam block is moved to theleft from theposition. shown in Figure 15 to the position shown in Figure 14,. theblock and the plungers thereon are caused to. travel upwardly from theposition shown in Figure 15 to the position shown in Figure 14, thuselevating the cam follower and the plungers 4-! to the position shown inFigure 12. Then the cam block is moved in the opposite direction. to theposition shown in Figure 15 which is the position for unlocking thesheets. The locking pins are frictional-1y held in the position shown inFigure 13" by the friction device 1583. Thus when theplungers M areraised from the position shown in Figure 11. to the position shown inFigure 12, the locking pins are moved upwardly to the position shown inFigure 12. Then, when the cam block moved to the position shown inFigure 13, the sheets are released to permit their removal or to permitad-- ditional sheets to be inserted.

normal circumstances, an operator cannot handle more than one pile ofsheets at a time and it is contemplated, therefore, that the locking,pins be individually operated by the finger of i the operator so thatthey may be selectively moved downward through the apertures in thesheets into registering relation with the plungers 4| tothc positionshown in Figure 11.

In the illustrated embodiment, the upper end of the plunger 42 is formedwith a conical re.- cess Q5 and the lower end of the locking pin isformed with a taper 91 to fit therein for GOIIVGIIT- ience inregistration and operation.

To operate the cam block 56', a lever 99 is provided the free end of.which extends through a slot H13 in the front wall [9 of the board.This: lever is shown in side elevation in Figure 111 as pivoted, as atltl, intermediate its ends conveniently ona depending member Hi2 on thelower part of the writing member It. A convenient handle N33 is formedon the: end; of the operating lever 99 which extends through the slottilt in the front wall it of the cabinet, while the rear end I ispivotally' connected, as by the stud we to the cam block 56 whereby;when lever end I03 is grasped by the operator and moved, say to theright, as viewed in Figures 14 and 15, the cam block is moved to theleft as viewed from the position shown in Figure 15 to the positionshown in Figure 14 and causes the locking pins 4| to be elevated, andwhen the lever is moved in the opposite direction the cam block 56 isreturned to the position shown in Figure 15. Then after removing and/orinserting sheets in selected piles, the operator may individuallyselectively press down the locking pins through the apertures in thepile of sheets attended to to retain them in position.

In the illustrated embodiment, the sheets are illustrated assuperimposed in groups or stacks or piles of a given number of sheets,here for purposes of illustration only-as a group of three. Obviously,any number of sheets may be included in a group depending upon thecapacity of the apparatus or the size of the sheet used. Each H sheet ofsuch group is progressively longer than the sheet immediatelythereabove. In the embodiment illustrated, this added length is obtainedat the top of the sheet. For instance, the shorter sheet indicated at 61in Figure 1 has at its uppermost end a space 58 which may be consideredas one-third unit length. This space 68 is formed along its edge withthe notches 45 and the apertures 47 for the positioning members andlocking pins, respectively. The sheet immediately therebelow, which isindicated at III, has two such spaces 68, one above the other, as shownin Figure 1. This results, of course, in the lower edge portion 80 ofthe sheet Hi extending downwardly below the sheet 51 a distancecorresponding to one unit length. The sheet immediately therebeneath,which is indicated at M, is formed with three such spaces indicated at88, whereby again the sheet I4 extends down- Wardly below the lower edgeof the sheet ID by a distance equal to one space 68 there disclosed.This distance is designated as a unit length. The next group of sheetsthere indicated at 16, TI and i8 is similarly respectively provided withthe single, double and triple spaces 68. In addition, while the sheets61, 10 and 14 are each provided with a single or unit area 12 on whichentries may be made, the three sheets of the next group are providedwith two such areas I2 and for the successive sheets, the subsequentgroups of three sheets have areas progressively increasing by one areauntil the lowermost Sheet of the group is provided not only with threespaces 68 but a total. say, of five areas I2 on which entries may bemade, as well as the areas 80 therebelow which may be exposed andcontain identifying characteristics to permit the desired sheet orgroups of sheets to be readily located. Thus, by locating the desiredsheets by inspection of the various areas 80, the thumb or finger needonly be placed, in the embodiment illustrated, upon the lower left handcorner 82 and the finger slipped under the corner of the sheetimmediately thereabove and all of the sheets above the designated sheetmay be lifted up together to display all the area of the selected sheetand permit entries to be made thereon or information to be obtainedtherefrom.

Viewing the stacks of sheets as displayed on the board as a whole inFigure 1, two spaced sets of stacks are shown. They represent stacks ofsheets in which the sheets in the individual stacks are shingled fromfront to rear and these individual stacks are also arranged in shingledrelation with respect to one another from left to right. In thisdisposition of stacks, a plurality of stacks, the sheets of each stackbeing longer than the one above by one unit length, are mounted on theboard beginning at the left and the next stack is superimposed on thestack already in place so that the left column of the first stack isexposed and the third stack is similarly superimposed to the left adistance sufficient to expose the left hand column of the secondmentioned stack, and so on across the board. Obviously, the stacks couldbe shingled solely from front to rear. In the latter event, the sheetsdo not overlap sheets in stacks on either side.

When entries have been made on all of the lowermost unit areas disposedon each of the sheets, in a group, for a given period, the areas orunits I2 at the lower part of each sheet may be removed. This may beconveniently done by placing all of the sheets in what may be called analigner, such as illustrated in Figures 4 and 5 and, as viewed in Figure4, by inclining the aligning box to the left as viewed, the lower part12 of all the sheets are brought together so that all of thecorresponding areas are aligned as illustrated in Figure 4. Thelowermost unit I2 on each sheet in the pile is then cut off,conveniently by some such instrumentality :as that shown in Figures 7and 8, which severs the lowermost unit 12, by a knife or other cuttingdevice. To realign the top edges preparatory to replacing the pile onthe board, the pile is placed in the aligner, which is then tipped inthe opposite direction to shift all of the sheets against the wall atthat end and thus align the top edges of the pile of sheets for returnto the board,

they being by the last mentioned maneuver in alignment at that end.

The aligner shown in Figures 4 and 5 is illustrative of any alignersuitable for the purpose at hand. Generally, it is an elongatedrectangular box-like member, one side 84 of which is conveniently opento facilitate the insertion and removal of a pile of sheets and tovisibly note the correctness of the position of the sheets in the seriesas well as to note the absence of a sheet indicated by a signal on thesheet. As shown, the base or bottom 86 is substantially the width of thesheets. In length, the bottom 86 is materially longer than the longestsheet contemplated to be used. The side wall 8'! is provided with anupwardly and inwardly directed lip member 83 which serves to retain thesheets as they are reciprocated in the aligner. Both ends are closed byend walls 90 and 9| respectively. If desired the aligner may function asa drawer, as shown in Figure 2, to be stored when not in use Within thecabinet beneath the writing surface.

A convenient severing device to simultaneously cut off the respectiveregistering end units after they have been aligned in the aligner isillustrated in Figures '7 and 8. The base II I of such severing devicemay be disposed in the cabinet as a drawer, which can be pulled out foruse as needed. The front wall carries a knob II3 for this purpose. Thefront wall II5 serves as a stop by which the ends to be severed may bealigned. The knife I I1 is positioned at such distance from the stop H5as to sever the end unit areas I2.

There is of course always the possibility that one of the sheets in astack may be misplaced. In order, therefore, to show whether or not asheet is missing, indicia are placed on successive sheets to registerwith one another and indicate immediately the missing sheet. ExaminingFigure 4 and commencing at the left in that figure, it will be shownthat all of the perforated areas 68 are provided with inclined lines PI,"that of the longer sheet of .a group of three having the line I I1 anda corresponding line I [9 a predetermined distance therea'bove. Theshorter and intermediate sheet is provided with lines, similarlynumbered, which in the position shown in Figure 4, are continuations ofthe lines on the intermediate sheet, and are correspondingly numbered.All of the sheets are thus marked. Thus, when the sheets are arranged inthe position indicated in Figure 4, these i-ines should all run into oneanother and form continuous straight lines. If, however, a sheet ismissing as indicated in the third sheet from the right in Figure 4, themissing sheet which actually occupies the space immediately therebelowwill have lines which do not register with the lines on either side. Thefact that a sheet is missin is at once apparent. As a furtherindication, ind-ici'a at one side of the top of each sheet is alsoprovided, in this instance taking the form of the word out so that aquick glance will immediately show that the continuous line is brokenand the word out will immediately indicate where the sheet that ismissing should be. This type of signal is equally effective even wheremore than one sheet adjacent to another is missing. It will be seen thatthree sheets indicated in dotted lines in Figure 6 are provided withcontinuous lines but these lines do not form continuations of the linesabove .and below. I'hus it indicates that three sheets are missing fromthis assembl'ance and the record "is not complete.

By the use of the summary strips, herein designated as sheets,visibility of a large number of accounts is attained within a relativelysmall area. For instance, in a space represented -.by a summary boardtwenty-five inches wide and eighteen inches high and providing that thelower corner portion of each sheet, one inch square, is visible,visibility of three hundred and twentyfive corner squares is afforded.Great convenience in use is afforded by the fact that it is merelynecessary to place the thumb or finger under the exposed corner, say theleft lower corner of the sheet above the selected sheet, to raise thegroup of sheets thereabove and expose the selected sheet for the entryof information. When all entries for a period are completed, the unitsat the lower part of each sheet may be brought into superimposedregistering position by a simple manipulation and severed from thesheets in a single cutting operation.

Various modifications will occur to those skilled in the art in thedisposition, configuration and selection of component features going tomake up the invention as a whole as well as in the use to which variousfeatures or combinations thereof may be put, and no limitation isintended by the illustrations in the accompanying drawings ordescription of features in conjunction with other features illustratedin the accompanying drawings except as indicated in the appended claims.

What is claimed is:

1. In a peg-board, in combination, a writing surface, said writingsurface comprising means formed with a row of perforations, pinsreciprocating in the respective perforations, cam means to elevate thepins, means to actuate the cams, and sheet positioning members disposedon the writing surface.

2. In a peg-board, in combination, a writing 10 surface, means in spacedrelation .to the writing surface, said means being formed with a row ofperforations having predetermined spacing, said writing surface beingformed with a row of perforations registering with the perforations inthe said means, plungers reciprocating in the respective registeringperforations, said plungers being provided with heads, respectively, aslide reciprocable on the said means and formed with cam surfacesadapted to respectively engage the heads on the plungers to elevate theplungers, means to actuate the slide, and sheet positioning membersdisposed on the writing surface proximate the rear wall and in verticalplanes intermediate the plungers, respectively.

3. In a peg-board, in combination, a writing surface, a rear wallextending above the writing surface, a ledge carried by the rear wall inspaced relation to the writing surface, said ledge being formed with arow of perforations having predetermined spacing, lockin pins in theperforations, means adapted to retain the locking pins in theperforations, said writing surface being formed with a row ofperforations registering with the perforations in the ledge, plungersreciprocating in the last mentioned perforations and adapted to engageand elevate the locking pins, a cam follower actuating the plungers, acam block, operative connections between the cam follower and the camblock to reciprocate said cam block, a lever, and means pivotallyconnecting one end of the lever to the cam block.

4. In a peg-board, in combination, a cabinet having a writing surface,ledge means carried by the cabinet in spaced relation to the writing.sur-

face, locking pins carried with the ledge means, friction means toretain the locking pins in inoperative position, plungers reciprocatingwith respect to the writin surface and adapted to elevate the lockingpins, a cam follower .to actuate the plungers, a cam lock adjacent thecam follower, operative connections between the cam block and thefollower, and means to actuate the cam block.

5. In a peg-board, in combination, a cabinet having an inclined writingsurface, a rear wall extending above the writing surface, ledge meanscarried by the rear wall in spaced relation to the writing surface, saidledge means being formed with a row of perforations having predeterminedspacing, locking pins in the perforations, friction means adapted toengage and retain the locking pins in the perforations, said writingsurface being formed with a row of perforations registering with theperforations in the ledge means, plungers reciprocating in the lastmentioned perforations and adapted to engage and elevate the lockingpins, a cam follower supporting the plungers, studs carried by the camfollower, a cam block adjacent the cam follower, means guiding the camblock for reciprocation, said cam block bein formed with cam slotsreceiving the studs, a lever pivoted in the cabinet, means pivotallyconnecting one end of the lever to the cam block, the front wall of saidcabinet being slotted to receive the free end of the lever.

6. In a peg-board, in combination, a cabinet having a writing surface, arear wall extending above the writing surface, a ledge carried by therear wall in spaced relation to the writing surface, said ledge beingformed with a row of perforations having predetermined spacing, lookingpins in the perforations, means to retain the looking pins in theperforations, said writing surface being formed with a row ofperforations registering with the perforations in the ledge, plungersreciprocating in the last mentioned perforations and adapted to engageand elevate the locking pins, cam means actuating the plungers, a camblock, operative connections between the cam block and the cam means, alever pivoted in the cabinet, and means connecting one end of the leverto the cam block.

7. In a peg-board, in combination, a writing surface, a rear wallextendin above the writing surface, a ledge carried by the rear wall inspaced relation to the Writing surface, locking pins carried by theledge, means adapted to retain the locking pins in selected positionsand means to actuate the locking pins.

8. In a peg-board, in combination, a writing surface, verticallyreciprocal, substantially straight locking pins, means to position thelocking pins in predetermined spaced relation along said surface, meansto retain the locking pins in predetermined elevated position, and levermeans to reciprocate the locking pins.

9. In a peg-board, in combination, a writing surface, a rear wallextending above the writing surface, ledge means in spaced relation tothe writing surface, said ledge being formed with a row of perforations,locking pins in the perforations, said Writing surface being formed witha row of perforations registering with the perforations in the ledge,plungers reciprocating in the last mentioned perforations and adapted toengage and elevate the locking pins and cam means to reciprocate theplungers.

10. In a peg-board, in combination, a, writing surface, ledge means inspaced relation to the Writing surface, locking pins frictionallymovable in said ledge, reciprocating plungers to elevate the lockingpins, and means to actuate the plungers.

11. In a peg-board, in combination, a writing surface, verticallyreciprocal, substantially straight locking pins, means supporting saidlocking pins for reciprocal movement, means to retain the locking pinsin predetermined positions 12 spaced with respect to the surface of theliegboard, and means for reciprocating the locking pins.

12. In a peg-board, in combination, a writing surface, verticallyreciprocable, straight locking pins reciprocable with respect to thewriting surface, and lever means reciprocating the locking pins.

ST. CLAIR BROMFIELD.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 269,601 Sinclair Dec. 26, 1882435,413 Fish Sept. 2, 1890 861,968 Gloe July 30, 1907 1,174,458Wigginton Mar. 7, 1916 1,462,683 Bush July 24, 1923 1,588,279 StricklandJune 8, 1926 1,588,947 Dinsmoor June 15, 1926 1,604,572 Hausheer Oct.26, 1926 1,727,011 Heileman Sept. 3, 1929 1,819,429 Manzler Aug. 18,1931 1,841,014 De Wael Jan. 12, 1932 1,844,744 Critchfield Feb. 9, 19321,958,743 Connor May 15, 1934 2,036,684 Dawson Apr. 7, 1936 2,061,878Neimann Nov. 24, 1936 2,077,677 Dawson et a1 Apr. 20, 1937 2,140,207Martin Dec. 13, 1938 2,142,786 Haskin Jan. 3, 1939 2,301,605 ZalkindNov. 10, 1942 2,316,209 Zalkind Apr. 13, 1943 FOREIGN PATENTS NumberCountry Date 609,398 Germany 1935 613,912 Germany 1935 676,405 Germany1939 815,866 France 1937

